SAFETY SYSTEM FOR ISOLATING THE DANGEROUS AREAS OF A DRILLING MACHINE, DRILLING MACHINE PROVIDED WITH SAID SAFETY SYSTEM AND PROCESS FOR USING SAID DRILLING MACHINE

摘要

The safety system comprises an extensible screen (9) reversibly extendable and retractable along the mast (3) and with a proximal end (9A) fixed to the rotary drive (5), and a distal end (9D), and the extensible screen enclosing the drill string (6) for at least a part of its length; a side displacement system (8) fixed to the mast allowing the longitudinal movement of the rotary drive along the mast and moving the rotary drive in a direction transversal to the mast; a sensor arranged for detecting the position of the distal end (9D) in the longitudinal direction.